The ultimate test for any customer-relationship metric is whether it helps the organization tune its growth engine to operate at peak efficiency. Does it helps employees clarify and simplify the job of delighting customers? Does it help them identify and engage their best customers? Does it allow them to compare their performance to the best from week to week and month to month? The notion of Promoters, Passives, and Detractors does all this, and helps Public Administration turn into Net Promoter stars.